Valve-grinder



F. F. RICHARD.

VALVE GRINDER.

APPLICATION FILED FEB. 9. 1921.

Patel lted Dec.13, 1921..

2 SHEETSSHEEI I.

'atfoz may F. F. RICHARD.

VALVE GRINDER.

APPLICATION FILED FEB. 9. I921.

1,400,000., Patented Dec.13, 1921.

2 SHEEISSHEEI 2.

UNITED STATES F. RICHARD, OF MONCTON, NEW BRUNSWICK, CANADA.

VALVE-GRINDER.

Specification of Letters Patent.

Application filed February 9, 1921. Serial No. 443,570.

To all whom it may concern Be it known that I, F IDELE F. RICHARD, a subject of the King of England, residing at Moncton, in the Province of New Brunswick and Dominion of Canada, have invented anew and useful Valve-Grinder, whereof the following is a specification.

The device forming the subject matter of this application is adapted to be used for grinding the valves of an internal combustion engine.

The invention aims to provide novel means for imparting rotation to a shaft which, in turn, transmits rotation to the valve, novel means being provided for moving the shaft endwise, and novel means being supplied for supporting the shaft for rotation, and for adjusting the position of the shaft with respect to the valves which are to be ground.

Itis within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the invention appertains.

I do not bind myself to the specific form shown in the drawings and hereinafter de scribed, since,'within the scope of what is claimed. a mechanic may make such changes as his skill may dictate, without departing from the spirit of the invention.

In the drawings :Figure 1 shows in side elevation, a device constructed in accord ance with the invention, mounted on an engine; Fig. 2 is" a top plan of the structure shown in Fig. 1; Fig. 3 is a section on the line 33 of Fig. 2; Fig. 4 is a top plan of the casing, the lid being removed; Fig. 5 is a section on the line 5-5 of Fig. 3; Fig. 6 is a section on the line 6-6 of Fig. 3; Fig. 7 is a section on the line 7-7 of Fig. 3; Fi 8 is a section on the line 8 8 of Fig. 1.

The device forming the subject matter of this application, includes a support com-- prising a base plate 1 carrying a split clamp? ing'sleeve 2 provided with ears 3 connected by a screw 4. The base plate 1 has an opening 5 adapted to receive a securing element 6 whereby the base plate may be held on the cylinder'block 7 of an internal combustion engine. It may be convenient to hold the base plate 1 on the cylinder block 7 by means of one of the stud bolts which,'being received in the openings 8, ordinarily hold the cylinder head on the block 7. A standard in the form of a screw 9 is threaded into the sleeve 2 and is provided at its upper end with a head 10 carrying a set screw 11. An arm 12 is adjustable longitudinally in the heaci l0 and is offset at one end, as shown at 1 The offset end 14 of the arm 12 extends beneath a cylindrical casing 15 including Patented Dec. 13, 1921. i

a. removable lid 16, the casing having a reduced neck 17 received between jaws 18 on the part 14 of the arm 1.2,thejaws being constrained by a screw 19 to grip the neck 17 of the casing. A tubular shaft 20 is ournaled. at one endin the neck 17 of the caslng, the other end 2.1 of the shaft being reduced and being journaled in a boss 22 on the lid 16. The shaft 20 includes a threaded part 23, whereon a disk 24 is held, the disk having a peripheral groove 25. A lever 26 is fulcrumed intermediate its ends as at 27, on the casing 15. That portion of the lever 26 which extends into the casing 15 carries a fork 28,'the members of which are provided with pins 29 whereon rollers 30 are journaled, the pins and the rollers constituting rojections received in the groove 25 of t e disk 24.

A coiled spring 31 is disposed about the shaft 20, one end of the spring being secured to the shaft, as denoted by the numeral 32. To the other end of the spring 31, a flexible element, such as a bit of chain, is secured, the chain being denoted by' the numeral 33, and extendin outwardly through an opening 34 in t e casing 15. The part 33 terminates in an enlargement or ring 35 of such a size that it cannot be pulled inwardly through the opening 35.

A drum 36 is formed on the shaft 20 and receives a flexible operating member 37, which may be a strap. The inner end of the operating member 37 issecured at 38 to the shaft 20, the outer end of the operat ing member being extended through any A tool holder, in the form of a rod 41,

is adjustable longitudinally in the shaft 20 and is held in adjusted positions b a set screw 42 threaded into the shaft pivot element 44 in the lower end of the member 41 carries a blade 43 or other tool, adapted to engage one of the valves 45 of the engine.

In operation, the shaft 20 and the tool holder41 are rotated in'one direction-by a pull exertedon the operating member 37 by way of the handle 40. The spring 31 rotates the shaft 20 and the holder 41 in an opposite direction. Clearly, the construction is such that the engine valve will be rotated first in one direction and then in an opposite direction. The shaft 20 ma be moved endwlse through the medium 0 the lever 26. The lever 26 constitutes means whereby any desired pressure may be put on the valve and, further, since the shaft 20 can be moved endwise by the lever 26, the valve may be lifted at any time, to permit grindlng paste to be placed under the valve. The tool holder 41 may be adjusted endwise in the shaft 20, so that the tool 43 will engage the valve, The flexible connection 33 between the sprlng 31 and the casing 15 prevents the sprlng from bein distorted when the shaft 20 is moved longitudinally by the lever 26. The set screw 11 may be loosened, thereby permitting the arm 12 to be moved lengthwise in the head- 10, to the end that the tool 43 may be engaged with any of the valves 45. The arm 12 may be raised and lowered by threadlng the screw 9 upwardly or downwardly in the sleeve 2. After the screw 9 has assumed the desired position, it ma be held against rotatlon by tightening up t e screw 4. Since the screw 9 can rotate in the sleeve 2, the arm 12 and the casing 15 may be swung to one slde, away from the valves.

1. A valve grinder comprising a support; a tool-carrying shaft journaled in the support and movable longitudinally therein; means under the control of an operator for rotatin the shaft in one direction; spring means for rotating the shaft in an opposlte direction; and means under the control of an operator for moving the shaft longltudmally.

2. A valve grinder comprising a support; a lever fulcrumed thereon; a tool-carrying shaft journaled in the support and in the lever and movable longitudinally in the support; sprlng means for rotating the shaft in one direction; and means under the control of an operator for rotating the shaft in an opposite direction.

3. A valve grinder comprislng a support; a shaft j ournaled in the sup 0r t and movable longitudinally therein; a exlble operatin member wound about the shaft; a helica spring about the shaft and connected at its inner end to the shaft; means for moving the 4. In a device of the class described, a

base; means for securing the base to an engine; a standard adjustable longitudinally on the base; means for holding the standard in adjusted positions with respect to the base; an arm longitudinally adjustable in the standard, transversely of the standard; means for holding the arm in adjusted positions with respect to the standard; a rotatable valve-engaging member journaled on the arm; and means for rotating said member.

5. In a'device of the class described, a base; means for securing the base to an engine; a standard mounted for rotation and for longitudinal movement on the base; means for holding the standard in adjusted positions with respect to the base; an arm adjustable longitudinally in the standard, transversely of the standard; means for holding the arm in adjusted positions with respect to the standard; and a rotatable valve-engaging member journaled in the arm.

6. A valve grinder comprising a casing; a tubular shaft journaled in the casing and longitudinally slidable therein; a lever fulcrumed on the casing, the shaft being journaled on the lever, and the lever constituting means for imparting longitudinal movement to the shaft; a tool holder adjustable longitudinally in the shaft; means for retaining the holder in adjusted position longitudinally of the shaft; means under the control of an operator for rotating the shaft in one direction; spring means for rotating the shaft in an opposite direction; a support wherein the casing is rotatably held for ad- FIDELE F. RICHARD.

Witnesses: V

FULDA L. SEARCH, MASON B. LAWTON. 

